JP6525682B2 - Fixing device and septic tank of air diffuser - Google Patents

Description

  The present invention relates to a fastener for securing a diffuser.

  As a conventional aeration apparatus and its fixing tool, what is shown to patent document 1 is mentioned, for example. As described in this patent document, the conventional aeration apparatus disposed in the aerobic treatment tank in the septic tank comprises an air supply pipe hanging along the partition wall of the aerobic treatment tank, and the air supply pipe It is generally known that it comprises one aeration tube extending in the horizontal direction from the lower end of the air supply tube, and has an L-shaped shape in side view.

  The conventional method of attaching the aeration device to the septic tank is to lower the aeration device along the partition wall of the aerobic treatment tank and fit and fix it in the fixture provided on the partition wall of the aerobic treatment tank . That is, in this method, positioning in the left-right direction for fixing the air diffuser to a predetermined position is performed by the partition wall of the aerobic treatment tank, and positioning in the front-rear direction is performed by the fixing tool.

JP 9-29274 A

  By the way, it is preferable to generate the upward flow by aeration from the aeration device generated in the treated water in the aerobic treatment tank in order to enhance the aeration effect at the plane central part of the aerobic treatment tank. However, in the conventional aeration apparatus, since the air supply pipe is disposed along the partition wall of the aerobic treatment tank, the lower end of the air supply pipe is required to generate upward flow in the planar central portion of the aerobic treatment tank. It is necessary to extend the aeration tube provided at the bottom of the aerobic treatment tank so as to reach at least the center of the bottom of the aerobic treatment tank.

  Therefore, in the conventional air diffuser, the tip of the air diffusion pipe tends to float because the total length of the air diffusion pipe is long. As a result, it may be difficult to maintain the horizontal posture of the air diffuser, and it may be difficult for the upward flow to occur in the planar central portion of the aerobic treatment tank.

  An object of the present invention is to more reliably generate an upward flow due to aeration of the aeration device in a plane central portion of the aerobic treatment tank to improve the aeration effect.

The first characteristic configuration of the fixing device according to the present invention is a fixing device for fixing a diffuser, wherein the diffuser is a plurality of diffusers which are cored in the same direction, and the plurality of diffusers. A first guide portion for guiding the diffuser of the air diffuser to a predetermined position in the front-rear direction, and a connection portion of the air diffuser in the left-right direction And a second guide portion for guiding, wherein the first guide portion and the second guide portion are integrally formed ,
Wherein said second guide portion and the first guide portion is that that is formed by the inclined portion and the fixture which is formed on the inclined surface.
A second feature of the fixture according to the present invention is a fixture for fixing a diffuser, wherein the diffuser comprises a plurality of diffusers which are cored in the same direction, and the plurality of diffusers. A first guide portion for guiding the diffuser of the air diffuser to a predetermined position in the front-rear direction, and a connection portion of the air diffuser in the left-right direction A second guide portion for guiding, the first guide portion and the second guide portion are integrally formed, and when the air diffuser is fitted into the receiving portion of the fixture, The first guide portion guides the tube axis of the diffusion tube away from the vertical central axis of the fixture, and the second guide portion has the tube axis of the connection portion at the vertical center of the fixture It is at the point of guiding in the direction approaching the axis.
A third characterizing feature of the fixing device according to the present invention is a fixing device for fixing a diffuser, wherein the diffuser is a plurality of diffusers which are cored in the same direction, and the plurality of diffusers. A first guide portion for guiding the diffuser of the air diffuser to a predetermined position in the front-rear direction, and a connection portion of the air diffuser in the left-right direction And a second guide portion for guiding, wherein the first guide portion and the second guide portion are integrally formed, and in a position where the aeration device is fixed to the receiving portion of the fixture, the first guide portion and the second guide portion are integrally formed. The first guide portion and the second guide portion are formed so as to be separated upward and in the outward direction in plan view from the contact points of the aeration tube or the connection portion and the receiving portion. is there.

[Action and effect]
According to the present configuration, each of the first guide portion and the second guide portion of the fixture can be in the front-rear direction even if the worker is unlikely to confirm the fixture in the aerobic treatment tank containing the water to be treated And, in order to guide the aeration device in the left and right direction, the aeration device can be securely fixed.

  Therefore, by installing the fixing device of the present invention at the center of the bottom of the aerobic treatment tank, the diffuser can be easily installed at the center of the bottom of the aerobic treatment tank. Upflow can be more reliably generated in the planar central portion of the tank. Furthermore, according to the present configuration, since the connection portion is accommodated in the receiving portion of the fixing tool, air release from the air diffusion pipe is not hindered by the fixing tool, and a higher diffusion effect is exhibited.

A fourth characteristic configuration is provided with a locking portion that defines the height position of the air diffuser, and the locking portion, the first guide portion, and the second guide portion are integrally formed. .

[Action and effect]
According to this configuration, since the vertical position of the air diffuser can be defined by the locking portion, when fitting the air diffuser into the receiving portion of the fixture, it is determined how far the air diffuser should be lowered It is possible to prevent the fixing tool from being broken by applying too much force from above.

A fifth characterizing feature is that a gap is formed between the lower part of the fixed aeration device and the receiving part of the fixing tool .

[Action and effect]
According to this configuration, since a gap is formed below the fixed aeration device, for example, when the aeration device is fixed in a situation where a plurality of fluid carriers exist in the aerobic treatment tank, the flow temporarily Even if the carrier is caught in the receiving part of the fixing tool, the fluid carrier can be released into the gap, so that there is no problem in fixing the air diffuser.

According to a sixth characterizing feature, the diffusers extending in the left-right direction are provided at both ends of the connecting portions extending in the front-rear direction, and the diffusers and the connecting portions are formed in an H shape in plan view The point is.

[Action and effect]
According to this configuration, since the air diffusion pipe and the connection part are formed in an H shape in plan view, the aeration part configured by the air diffusion pipe and the connection part becomes a so-called biaxial type, and a conventional uniaxial type (one The amount of aeration can be increased compared to the aeration tube of the present invention, and a higher aeration effect is exhibited.

It is a schematic diagram which shows the outline of an internal structure of the septic tank which concerns on this invention. It is a perspective view after the installation of the air diffusion apparatus which concerns on this invention, and its fixing tool. It is a perspective view before the installation of the air diffusion apparatus which concerns on this invention, and its fixing tool. It is a side view after the installation of the aeration device concerning the present invention, and its fixing tool. It is a longitudinal cross-sectional front view after the installation of the air diffusion apparatus which concerns on this invention, and its fixing tool. It is a perspective view which shows other embodiment of the fixing tool based on this invention.

[Embodiment]
Hereinafter, embodiments of the present invention will be described based on the drawings.
(Septic tank)
As shown in FIG. 1, the septic tank 1 which concerns on this embodiment is provided with the anaerobic filter tank A1, the 2nd anaerobic filter tank A2, the aerobic processing tank B, the sedimentation tank C, and the disinfection tank D from an upstream side, and is comprised. It is done.

  Raw water of the treated water flows from the raw water inlet 2 into the anaerobic filter bed tank A1 and is decomposed while being transferred downstream in the order of the second anaerobic filter bed tank A2 and aerobic treatment tank B, the sedimentation tank C and disinfection It is discharged from the outlet 4 through the tank D to the outside of the tank.

  The aerobic treatment tank B accommodates and holds a plurality of fluid carriers 3 configured to be fluid with the water to be treated in a state where microorganisms are carried. In addition, the aeration pipe 6 of the aeration device E is fixed by the fixing tool F at substantially the center of the bottom surface of the aerobic treatment tank B, and air bubbles are supplied from the aeration pipe 6 by air supply from a blower (not shown) installed outside the tank. It is configured to be released. When air bubbles are released from the air diffusion pipe 6, an upward flow at the center of the tank and a downward flow on the side wall of the tank occur, whereby the fluid carrier 3 swirls and flows in the tank.

  In the aerobic treatment tank B, aerobic decomposition of the organic substance and nitrification reaction of ammonia nitrogen are performed by the function of the microorganism attached to the fluid carrier 3. An example of the fluid carrier is, for example, a square sponge-like carrier having a specific gravity of about 1.01 and a size of 20 mm × 20 mm. Further, as a constituent material of the fluid carrier 3, for example, polyurethane (PU) can be mentioned. The shape, size, and constituent materials of the fluid carrier 3 are not limited to the above-described configuration, and any configuration may be used as long as durability and processing performance can be determined to be equal or higher. Also good.

  The to-be-processed water processed by the aerobic treatment tank B flows into the sedimentation tank C from the advection port H of the lower part of the partition wall W which divides the aerobic processing tank B and the precipitation tank C.

(Air diffuser)
As indicated by two-way arrows in FIG. 2, for convenience in the present specification, the front-rear direction indicates the XX direction, the left-right direction indicates the YY direction, and the vertical direction indicates the Z-Z direction.

  As shown in FIGS. 2 and 3, the air diffuser E according to the present embodiment includes the air diffuser 5, the air supply pipe 8 for supplying air to the air diffuser 5, the air diffuser 5, and the air supply. It comprises and the connection part 10 which connects the pipe | tube 8 and it is comprised.

  The aeration unit 5 includes a cylindrical porous aeration tube 6 capable of releasing air. Examples of the constituent material of the air diffusion pipe 6 include polyethylene (PE). In addition, the opening of the end of the aeration pipe 6 is attached and closed by the cap member 7.

  The connection portion 10 includes a cylindrical main body portion 11 extending in the front-rear direction, and a cylindrical aeration pipe attachment portion 12 extending in the left-right direction at each of the front and rear ends of the main body portion 11. A cylindrical supply pipe mounting portion 14 for mounting the air supply pipe 8 is projected upward at a central portion in the longitudinal direction of the main body portion 11. The aeration pipe attachment portion 12 is provided with two ridges 13 on the outer peripheral surface, and is provided with a small diameter portion (not shown) smaller in diameter than the ridge 13 at both left and right ends. As a constituent material of connection part 10, polyvinyl chloride (PVC) is mentioned, for example. In addition, the connection part 10 in this embodiment is comprised by combining three flanged cheeses.

  The air supply pipe 8 is configured to include a cylindrical pipe. In the present embodiment, an elbow joint 9 is provided at the upper end. Examples of the constituent material of the air supply pipe 8 include polyvinyl chloride (PVC).

  When assembling the air diffuser E, first, the air diffuser 6 is attached to each of four non-illustrated small diameter portions of the connection portion 10. This attachment externally fits the end opening (the side not closed by the cap) of the aeration tube 6 to each of the four small diameter portions of the aeration tube attachment portion 12. At this time, the aeration tube 6 is attached in such a manner as to be pushed until it hits the weir 13 of the aeration tube attachment portion 12. Finally, the lower end of the air supply pipe 8 is fitted into the supply pipe mounting portion 14 of the connection 10.

  The air diffusion device E in the present invention includes a plurality of air diffusion tubes 6 which are cored in the same direction, and a connection portion 10 connecting the plurality of air diffusion tubes 6 to each other. That is, the aeration part (part comprised by the aeration pipe 6 and the connection part 10) of the aeration device E in this invention is comprised by multiaxial type.

  The aeration part in the present embodiment is a so-called "biaxial type" in which the aeration pipe 6 and the main body portion 11 of the connection portion 10 are formed in an H shape orthogonal to each other in plan view. Other embodiments include, for example, a U-shape and a crank shape in plan view. In addition, the vertical positions of the plurality of aeration tubes 6, that is, the heights of the shafts do not necessarily have to be set to the same height.

(Fixture)
As shown in FIGS. 3 to 5, the fixture F according to the present embodiment is configured to include two support members 20 having the same shape.
Each supporting member 20 is configured to include a first inclined surface 21, a first bent portion 24, a second inclined surface 25, a second bent portion 26, a third inclined surface 27, a joint portion 28, and a bottom plate portion 29. .

  As shown in FIGS. 3 and 5, the first inclined surface 21, the first bent portion 24, the second inclined surface 25, the second bent portion 26, and the third inclined surface 27 of the support member 20 have longitudinal cross sections. It is shaped in a crank-like shape. The joint portion 28 extends substantially vertically from the lower end of the third inclined surface 27. The bottom plate portion 29 is formed so as to be bent at a substantially right angle to the side where the first inclined surface 21 is located at the lower end of the joint portion 28 to form a horizontal surface.

  As shown in FIGS. 3 and 4, step portions 30 which are cut at substantially right angles are formed at both end portions of the third inclined surface 27 in the front-rear direction.

  At an upper end portion of the first inclined surface 21, an apex 22 formed at a central portion in the front-rear direction and an inclined portion 23 inclined downward from the both ends of the apex 22 at a predetermined angle are formed.

  A notch 31 extending across the third inclined surface 27, the joint 28, and the bottom plate 29 is formed in a substantially central portion in the front-rear direction.

  When assembling the fixing tool F, the joint portions 28 of the two support members 20 are butted and joined to form a symmetrical shape. Next, the two support members 20 are fixedly joined by screwing so as to extend over both the joints 28 through the screw holes provided in the joints 28.

  As shown in FIG. 5, in the present embodiment, in the fixing tool F, the portion constituted by the second inclined surface 25, the second bending portion 26, and the third inclined surface 27 of each of the two support members 20 is It becomes the receiving part 32. The receiving portion 32 accommodates the connection portion 10 of the aeration device E.

  Further, in the present embodiment, the inclined portion 23 of the support member 20 constitutes a first guide portion for guiding the air diffuser 6 of the air diffuser E to a predetermined position in the front-rear direction, and the first inclined surface of the support member 20 A second guide portion 21 guides the connecting portion 10 of the air diffuser E to the receiving portion 32 in the left-right direction. Further, the stepped portion 30 of the support member 20 constitutes a locking portion that defines the height position of the air diffuser E. In the present embodiment, in the fixing tool F, the first guide portion, the second guide portion, and the locking portion are integrally formed.

  As a constituent material of the support member 20, fiber reinforced plastic (FRP) is mentioned, for example. The support member 20 can be manufactured, for example, by a known hand lay-up molding method.

  In the present embodiment, the first inclined surface 21, the first bent portion 24, the second inclined surface 25, the second bent portion 26, the third inclined surface 27, the joint portion 28, the bottom plate portion 29, and the step portion 30 of the support member 20. , And the top 22 and the slope 23 at the upper end portion of the first slope 21 are integrally formed.

  As another embodiment of the fixing tool F, for example, a box-like configuration as shown in FIG. 6 may be used. In addition, about the structure which has the effect | action and effect similar to the structure in the above-mentioned embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  In the above embodiment, the fixing tool F is configured by joining two supporting members 20, but the fixing tool F in the embodiment of FIG. 6 is configured by one member. Further, in the present embodiment, the receiving portion 32 provided with the arc-like curved surface also serves as a locking portion. Therefore, in the fixing tool F of the present embodiment, the inclined portion 23 of the first guide portion, the first inclined surface 21 of the second guide portion, the receiving portion 32 and the locking portion are integrally formed, and the number of parts is This can be reduced and the manufacturing cost can be reduced.

(Fixing method)
First, the fixture F is fixed at a predetermined position on the bottom surface of the aerobic treatment tank B, for example, at a substantially central position in plan view. At the time of fixing, for example, an adhesive may be applied to the back surface of the bottom plate portion 29 and attached to the bottom surface of the aerobic treatment tank B. When a reinforcing rib is erected on the bottom surface of the aerobic treatment tank B, the rib may be bonded by being fitted in the notch 31 of the fixing portion. Thereby, the fixing tool F is fixed in the state by which direction of the fixing | fixed part in planar view was defined.

  Then, the diffuser A is attached to the fixture F. When the aeration device E approaches from above the fixture F, the aeration tube 6 of the aeration device E moves to a predetermined position in the front-rear direction while sliding on the inclined portion 23 of the fixture F. In the present embodiment, the aeration tube 6 forming one axis is guided to one end side of the fixing tool F in the front-rear direction, and the aeration pipe 6 forming the other axis faces the other end side in the front-rear direction of the fixing device F You will be guided.

  At the same time as the air diffuser 6 is guided to a predetermined position, the main body 11 of the air diffuser E moves in the left-right direction while sliding on the first inclined surface 21 of the fixture F, It is guided in the vicinity of the bent portion 24.

  The distance in the left-right direction between the two first bent portions 24 is set to be slightly smaller than the diameter of the main body portion 11 of the air diffuser E. Therefore, when the main body portion 11 of the air diffuser E reaches the vicinity of the first bending portion 24, it is necessary to apply a force from above to push the main body portion 11 into. As a result, while the two first bent portions 24 are pushed and spread in the left-right direction by the main body portion 11, the main body portion 11 moves downward and is accommodated in the receiving portion 32. When the main body portion 11 is accommodated in the receiving portion 32, the two first bent portions 24 return to their original positions by their elastic restoring forces.

  Then, the connection portion 10 of the air diffuser E or the end of the air diffuser 6 is abutted and locked to the step 30 of the fixing tool F, whereby the height position of the air diffuser E is defined. At this time, as shown in FIG. 5, below the main body portion 11 of the air diffuser E, a gap S having an inverted triangular vertical cross section is formed.

  In the present embodiment, the diffuser device E is detachably fixed to the fixing tool F. When removing the aeration device E from the fixture F, the aeration device E may be pulled up. As a result, while the two first bent portions 24 are pushed and spread in the left-right direction by the main body portion 11, the main body portion 11 moves upward and comes out of the receiving portion 32. When the main body portion 11 comes out of the receiving portion 32, the two first bent portions 24 return to their original positions by their elastic restoring forces.

Other Embodiments
1. It is not necessarily limited to the septic tank about the application of the air diffuser according to the present invention and the fixture thereof.
2. The stepped portion 30 (locking portion) of the fixing tool F in the above-described embodiment may not necessarily be integrally formed with the first guide portion 23 and the second guide portion 21.
3. The gap S below the air diffuser E in the above embodiment may not necessarily be formed.
4. The aeration tube 6 and the main body portion 11 in the above-described embodiment are not necessarily limited to the case where they intersect at right angles (when they intersect at 90 degrees in plan view), and the aeration tube 6 is The shape may be substantially orthogonal to the main body portion 11 as obliquely attached in plan view.

  The air diffuser according to the present invention and its fixture can be suitably used, for example, in a septic tank.

DESCRIPTION OF SYMBOLS 1 septic tank 2 raw water inlet 3 fluid carrier 4 outlet 5 aeration part 6 aeration pipe 7 cap member 8 air supply pipe 9 elbow joint 10 connection part 11 body part 12 aeration pipe attachment part 13 鍔 14 supply pipe attachment part 20 support member 21 1st inclined surface (2nd guide part)
22 top 23 inclined portion (first guide portion)
24 first bent portion 25 second inclined surface 26 second bent portion 27 third inclined surface 28 joint portion 29 bottom plate portion 30 stepped portion (locking portion)
31 Notched part 32 Receiving part A1 Anaerobic filter bed A2 Second anaerobic filter bed B Aerobic treatment tank C Sedimentation tank D Disinfection tank E Diffuser F Fixture W Partition wall H Advection port S Clearance

Claims (7)

A fixing device for fixing the aeration device,
The air diffusion device includes a plurality of air diffusion tubes which are misaligned in the same direction, and a connection portion which connects the plurality of air diffusion tubes.
A first guide portion for guiding the air diffuser of the air diffuser to a predetermined position in the front-rear direction;
And a second guide portion for guiding the connecting portion of the air diffuser to the receiving portion of the fixture in the left-right direction,
The first guide portion and the second guide portion are integrally formed ,
Wherein said second guide portion and the first guide portion, the fixture characterized that you have been formed by the inclined portion and the fixture which is formed on the inclined surface. A fixing device for fixing the aeration device,
  The air diffusion device includes a plurality of air diffusion tubes which are misaligned in the same direction, and a connection portion which connects the plurality of air diffusion tubes.
  A first guide portion for guiding the air diffuser of the air diffuser to a predetermined position in the front-rear direction;
  And a second guide portion for guiding the connecting portion of the air diffuser to the receiving portion of the fixture in the left-right direction,
  The first guide portion and the second guide portion are integrally formed,
  When fitting the aeration device into the receptacle of the fixture,
  The first guide portion guides the tube axis of the aeration tube away from the vertical central axis of the fixture;
  The second guide portion guides the tube axis of the connection portion in a direction approaching the central axis of the fixing device in the vertical direction. A fixing device for fixing the aeration device,
  The air diffusion device includes a plurality of air diffusion tubes which are misaligned in the same direction, and a connection portion which connects the plurality of air diffusion tubes.
  A first guide portion for guiding the air diffuser of the air diffuser to a predetermined position in the front-rear direction;
  And a second guide portion for guiding the connecting portion of the air diffuser to the receiving portion of the fixture in the left-right direction,
  The first guide portion and the second guide portion are integrally formed,
  At the position where the aeration device is fixed to the receiving part of the fixing device,
  The first guide portion and the second guide portion are formed so as to be separated upward and in an outward direction in plan view from contact positions of the aeration pipe or the connection portion and the receiving portion. Fasteners characterized by A locking portion for defining a height position of the air diffuser;
The fixture according to any one of claims 1 to 3, wherein the locking portion, the first guide portion, and the second guide portion are integrally formed. The fixture according to claim 4 , wherein a gap is formed between the lower part of the fixed aeration device and the receiving part of the fixture. The air diffuser is provided with the diffuser pipes extending in the left-right direction at each end of the connecting portion extending in the front-rear direction,
The fixture according to any one of claims 1 to 5 , wherein the air diffusion tube and the connection portion are formed in an H shape in plan view. A septic tank provided with the fixing tool according to any one of claims 1 to 6 .

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